This is basically the same as TI-CRAFT, but I changed the name because there's no crafting involved, and I think someone else is already using the name.
Controls:
left and right arrows: move
up: jump
Del and Stat: "climb" up/down (move 2 pixels, even if there is 1 in the way)
Vars and Clear: move sideways 2 pixels. (Going through a door)
Numbers: remove/place blocks
2ND: Menu